CN210074791U - Contract energy service system based on multi-energy complementation - Google Patents
Contract energy service system based on multi-energy complementation Download PDFInfo
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- CN210074791U CN210074791U CN201921161779.XU CN201921161779U CN210074791U CN 210074791 U CN210074791 U CN 210074791U CN 201921161779 U CN201921161779 U CN 201921161779U CN 210074791 U CN210074791 U CN 210074791U
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B10/00—Integration of renewable energy sources in buildings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a contract energy service system based on multipotency source is complementary is applied to in the factory and mine enterprise, include: the distributed photovoltaic power generation subsystem is built on the roof of an enterprise infrastructure and is used for photovoltaic power generation and providing the generated electric energy to a power distribution station inside the enterprise for the enterprise to use; the wind power generation subsystem is built in the enterprise and used for generating wind power and providing the generated electric energy to a power distribution station in the enterprise for the enterprise to use; the energy storage subsystem built in the enterprise realizes alternating current/direct current electric energy conversion and electric energy flow direction control through a bidirectional converter so as to provide alternating current/direct current electric energy when the power is cut off in the enterprise; and the energy management and control subsystem is used for managing and controlling the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem. The system can improve the energy configuration of the existing factory and mine enterprises, improve the energy ratio and reduce the energy consumption.
Description
Technical Field
The utility model relates to an energy development technical field particularly, relates to a contract energy service system based on multipotency source is complementary.
Background
With the rapid development of social economy, non-renewable energy sources are increasingly exhausted. Along with the continuous enhancement of environmental protection consciousness of people, the requirements of energy conservation and environmental protection are higher and higher in social production life.
At present, due to the outstanding performance of the multi-energy complementation and contract energy management technology in the aspect of energy conservation and emission reduction, the multi-energy complementation and contract energy management technology is widely concerned and applied, especially applied to a distributed micro-grid.
How to modify the existing industrial and mining enterprises by utilizing multi-energy complementation and contract energy management, so that the problems of improving the energy configuration of the existing industrial and mining enterprises, improving the energy ratio and reducing the energy consumption become a problem to be solved urgently.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
In view of this, the utility model provides a contract energy service system based on the complementation of multipotency source.
Other features and advantages of the invention will be apparent from the following detailed description, or may be learned by practice of the invention in part.
According to the utility model discloses an aspect provides a contract energy service system based on multipotency source is complementary, is applied to the factory and mining enterprise, includes: the distributed photovoltaic power generation subsystem is built on the roof of an enterprise infrastructure and is used for photovoltaic power generation and providing the generated electric energy to a power distribution station inside the enterprise for the enterprise to use; the wind power generation subsystem is built in the enterprise and used for generating wind power and providing the generated electric energy to a power distribution station in the enterprise for the enterprise to use; the energy storage subsystem built in the enterprise realizes alternating current/direct current electric energy conversion and electric energy flow direction control through a bidirectional converter so as to provide alternating current/direct current electric energy when the power is cut off in the enterprise; and the energy management and control subsystem is respectively in communication connection with the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem, is used for carrying out data acquisition on the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem, and sends control instructions to the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem according to the acquired data so as to carry out management and control operation.
According to an embodiment of the present invention, the system further comprises: the motor of the large-scale motor equipment adopts a variable frequency driving system.
According to an embodiment of the present invention, the system further comprises: lighting systems employing LED light sources; the lighting system also includes a sound sensor and a movement sensor to turn off the lighting device when the area is free of people.
According to the utility model discloses an embodiment, distributed photovoltaic power generation subsystem includes: a rooftop photovoltaic power generation unit; the rooftop photovoltaic power generation unit includes: the photovoltaic component comprises a first photovoltaic component, a plurality of first inverters and a transformer, wherein the first photovoltaic component consists of a workshop roof color steel plate and a metal bracket of the enterprise; the first photovoltaic module is electrically connected with the first inverter, the first inverter inverts direct current output by the first photovoltaic module into alternating current, the first inverter serves as a low-voltage side of the transformer, and the output alternating current is connected to a high-voltage bus of the enterprise power distribution station through a cable after being boosted by the transformer.
According to an embodiment of the present invention, the first photovoltaic modules are arranged in a vertical arrangement of a and b, each a and b of the first photovoltaic modules form a string of modules, each c strings of modules are electrically connected to one of the first inverters, and each d of the first inverters are integrated into one of the low voltage sides of the transformer; wherein a, b, c and d are all positive integers.
According to the utility model discloses an embodiment, distributed photovoltaic power generation subsystem still includes: a carport photovoltaic power generation unit; the bicycle shed photovoltaic power generation unit includes: the second photovoltaic module, the second inverters, the power distribution cabinets, the direct-current chargers and the alternating-current charging piles are formed by steel structures at the tops of the carports of the enterprises; the second photovoltaic module is electrically connected with the second inverter, the second inverter inverts direct current output by the second photovoltaic module into alternating current, the second inverter is electrically connected with a power distribution cabinet arranged on the shed, and the power distribution cabinet provides power for a direct current charger arranged on the shed and the alternating current charging pile.
According to an embodiment of the present invention, the second photovoltaic modules are arranged in an e f vertical arrangement, each e f second photovoltaic module forms a string of modules, each g string of modules is electrically connected to one second inverter, and each h second inverter is integrated into one power distribution cabinet; the power distribution cabinet, the direct-current charger and the alternating-current charging pile all adopt a floor mounting mode; and e, f, g and h are positive integers.
According to an embodiment of the present invention, the wind power generation subsystem comprises: a plurality of wind turbine generators; and the output side of each wind turbine generator is wired in a T-connection mode by adopting a cable, and the generated electric energy is connected to a low-voltage bus of the enterprise power distribution station.
According to an embodiment of the present invention, the energy management and control subsystem includes: a server, a workstation and a communication gateway; the server is in communication connection with the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem through the communication gateway, and the workstation is in communication with the server so that a worker can check data, configure parameters and control the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem through a user interface provided by the workstation.
According to the utility model discloses an embodiment, energy management and control subsystem provides data acquisition, real-time/historical data access, data processing analysis and data statistics show function.
According to the contract energy service system based on multi-energy complementation provided by the embodiment of the utility model, various energy sources can be integrated into the existing power distribution system of an enterprise, various energy sources are organically integrated, the energy utilization efficiency is improved, and the reliable power supply quality of the enterprise is ensured; in addition, in some embodiments, install energy memory additional, still energy-conserving the transformation of carrying out of great motor of electric load and lighting system reduces possible source consumption, has improved enterprise's electric power system reliability, has reduced enterprise energy cost.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a schematic diagram illustrating a structure of a contract energy service system based on multi-energy complementation according to an exemplary embodiment.
FIG. 2 is a schematic block diagram of a distributed photovoltaic power generation subsystem shown in accordance with an exemplary embodiment.
FIG. 3 is a schematic block diagram of a wind power subsystem shown in accordance with an exemplary embodiment.
FIG. 4 is a schematic diagram of an energy storage subsystem shown in accordance with an exemplary embodiment.
Fig. 5 is a schematic diagram illustrating an architecture of an energy management subsystem according to an exemplary embodiment.
FIG. 6 is a graph illustrating operation of a water pump motor according to one example.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present invention, which are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repetitive description will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the invention. One skilled in the relevant art will recognize, however, that the invention may be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known structures, methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the invention.
Fig. 1 is a schematic diagram illustrating a structure of a contract energy service system based on multi-energy complementation according to an exemplary embodiment. The system can be applied to industrial and mining enterprises, so that the energy configuration of the industrial and mining enterprises is improved, and the energy utilization rate is improved.
Referring to fig. 1, the system 10 includes: the system comprises a distributed photovoltaic power generation subsystem 11, a wind power generation subsystem 12, an energy storage subsystem 13 and an energy management and control subsystem 14.
FIG. 2 is a schematic block diagram of a distributed photovoltaic power generation subsystem shown in accordance with an exemplary embodiment.
Referring jointly to fig. 1 and 2, the distributed photovoltaic power generation subsystem 11 includes: roof photovoltaic power generation unit 111 and carport photovoltaic power generation unit 112.
The rooftop photovoltaic power generation unit 111 includes: the photovoltaic module 111a, a plurality of inverters 111b and transformer 111c that constitute by roof color steel board and metal support.
The photovoltaic module 111a is fixed on the photovoltaic bracket by a metal pressing block. The photovoltaic module 111a is electrically connected to a plurality of inverters 111 b. The inverter 111b inverts the direct current output from the photovoltaic module 111a into alternating current. The plurality of inverters 111b are used as low-voltage sides of the transformer 111c, and output alternating currents are boosted by the transformer 111c and then can be connected to an alternating current bus of the enterprise distribution station 15 (shown in fig. 1) in a cable mode and the like, so that spontaneous self-use is realized, the proportion of renewable energy sources is improved, and the electricity cost is reduced.
In some embodiments, the metal stent may be, for example, an aluminum alloy flat-type stent having a diameter of 41mm by 2.0 mm. The aluminum alloy flat-laying type support and the roof color steel plate can be fixed by a vertical lockstitching type metal roof special clamp. The clamp thickness may be, for example, 4 mm. The metal compact may be, for example, an aluminum alloy compact having a thickness of 4 mm.
In some embodiments, the photovoltaic modules 111a may be mounted in, for example, a x b (e.g., 2 x 11) vertical rows, with a series of a x b blocks (e.g., 22) of 1650mm x 996mm x 35mm single crystal photovoltaic modules. Each c (e.g., 16) string of components is assembled into 1 80kW inverter 111 b. The inverter 111b inverts 800V direct current into three-phase 540V alternating current; and each d (for example, 14) series inverters 111b are converged into the low-voltage side of a 1000kVA transformer 111c and boosted to a 10kV voltage level through the transformer 111 c. And the power distribution station is connected to a 10kV bus of the enterprise power distribution station 15 nearby in a cable mode and the like. Wherein a, b, c and d are positive integers
The carport photovoltaic power generation unit 112 includes: the system comprises a photovoltaic module 112a consisting of a steel structure on the top of a carport, a plurality of inverters 112b, a plurality of power distribution cabinets 112c, a plurality of direct current chargers 112d and a plurality of alternating current charging piles 112 e.
The photovoltaic module 112a is electrically connected to a plurality of inverters 112 b. The inverter 112b inverts the dc power output from the photovoltaic module 112a into ac power. The plurality of inverters 112b are electrically connected to a power distribution cabinet 112c disposed in the carport. The power supply for the power distribution cabinet 112c may be drawn from the 380V bus of the enterprise distribution room.
The direct current charger 112d and the alternating current charging pile 112e are both electrically connected with the power distribution cabinet 112c, and power supplies of the direct current charger and the alternating current charging pile are both from the power distribution cabinet 112 c.
This scheme utilizes the steel construction on bicycle shed roof to constitute photovoltaic module and generates electricity to be used for charging electronic passenger car with the produced electric energy of photovoltaic power generation, further realize spontaneous self-service.
In some embodiments, the carport is in the form of a steel structure. Each parking space may be designed, for example, to be 5.5 meters long and 3.19 meters wide. The shed roof can be designed with an inclination angle of 10 degrees from north to south and can bear 0.55kN/m2Wind pressure load and 1kN/m2The lowest point of the top of the shed is 3 meters away from the ground. The car shed foundation adopts a strip foundation form, for example, double columns are adopted, the distance between the north and south columns is 3.5 meters, and the distance between the east and west columns is 6.38 meters. The pillars are, for example, all 125mm&125mm H-shaped steel.
In some embodiments, the photovoltaic modules 112a on the roof of the shed are arranged in e x f (e.g., 3 x 7) columns, with the module size being 1650mm x 996mm x 35 mm. e f (e.g., 21) blocks 1650mm 996mm 35mm of single crystal photovoltaic modules 112a are in a string, and each g (e.g., 8) string of modules is assembled into 1 40kW string-type inverter 112b, which inverts 800V dc to 380V three-phase ac. h (for example, 2) series inverters 112b are collected into 1 power distribution cabinet 112c installed at the shed site. The power distribution cabinet 112c is mounted on the ground, for example.
In some embodiments, for example, 2 60kW dc chargers 112d and 6 7kW ac charging piles 112e may be disposed in the carport area, and both may be disposed at one end (e.g., north end) of each parking space in a floor-mounted manner. The power sources of the dc charger 112d and the ac charging pile 112e can be led from the power distribution cabinet 112 c. The dc chargers 112d may adopt, for example, a 1-machine 2-charging mode, that is, each charger 112d may charge 2 electric passenger cars at the same time. The ac charging posts 112e may adopt, for example, a 1-machine-1 charging mode, that is, each charging post 112e may charge only 1 electric passenger car at the same time.
FIG. 3 is a schematic block diagram of a wind power subsystem shown in accordance with an exemplary embodiment.
Referring collectively to fig. 1 and 3, the wind power subsystem 12 includes: a plurality of wind turbines 121.
In some embodiments, for example, 3 wind power plants 121 may be provided in an open area of an enterprise plant area. The distance between the wind turbine generator sets 121 is larger than 50 meters. The height of the tower of each wind turbine generator 121 is 18 meters, the diameter of a wind wheel is 12.5 meters, the starting wind speed is 3 meters/second, the rated wind speed is 10 meters/second, the working wind speed is 3-25 meters/second, the safe wind speed is 50 meters/second, and three-phase alternating current with the rated voltage of 380V is output. The output side of each wind turbine generator 121 is wired in a cable T connection mode, and the generated electric energy is input to a 380V bus of an enterprise distribution station nearby to realize spontaneous self-use.
FIG. 4 is a schematic diagram of an energy storage subsystem shown in accordance with an exemplary embodiment.
The energy storage subsystem 13 is used to provide a backup power system for the enterprise, and referring to fig. 1 and 4 in combination, may include: a plurality of battery cabinets 131, a control cabinet 132, and an electrical junction cabinet 133.
Each battery cabinet 131 may include a plurality of battery boxes, and each battery box may contain a battery. Each battery box may be managed by, for example, 1 battery monitoring unit, and each battery cabinet 131 is managed by a battery management system. The current output from the battery cabinet 131 is converged to the electrical combiner cabinet 133 through the dc bus. The control cabinet 132 includes a Power Conversion System (PCS) for controlling the charging and discharging processes of the battery, and can implement ac/dc power conversion and power flow direction control through a bidirectional converter, for example, the ac load can be directly powered without a power grid. The power of the PCS may be, for example, 0.5 MW. The control cabinet 132 may also provide a CAN communication summary interface for each battery cabinet 131, upload battery data and related information to the energy management and control subsystem 14 through ethernet, and also receive a control instruction issued by the energy management and control subsystem 14, and control charging or discharging of the battery according to the symbol and size of the control instruction. In addition, the control cabinet 132 can also acquire the state information of the battery, realize the protective charging and discharging of the battery, and ensure the safe operation of the battery.
In some embodiments, the battery may be, for example, a lithium iron phosphate battery with a capacity of 1 MWh. The energy storage subsystem 13 is, for example, composed of 1 30-foot container subsystem of 0.5MW/1MWh, and includes 7 battery cabinets, 1 control cabinet, and 1 bus cabinet. Every 16 230Ah battery cores are grouped in a 1P16S mode to form 1 battery box, and the battery box is managed by 1 battery monitoring unit; 14 iron phosphate battery boxes are connected in series to form 1 battery cabinet which is managed by 1 set of battery management system. The dc bus of the 7 battery cabinets is bussed to an electrical busway cabinet 133.
Fig. 5 is a schematic diagram illustrating an architecture of an energy management subsystem according to an exemplary embodiment.
Referring jointly to fig. 1 and 5, the energy management subsystem 14 includes: server 141, workstation 142 and communication gateway 143.
The energy management and control subsystem 14 is used for managing and controlling each electric power subsystem of an enterprise, such as the distributed photovoltaic power generation subsystem 11, the wind power generation subsystem 12 and the energy storage subsystem 13. Each power subsystem communicates with the server 141 through the communication gateway 143, transmits information related to each power subsystem, and receives a control command transmitted by the server 141. The workstation 142 communicates with the server 141, and a worker can view the condition of each power subsystem through a user interface provided by the workstation 142, and perform operations such as configuration and control through the user interface.
The overall architecture of the energy management and control subsystem 14 follows a Service Oriented Architecture (SOA) design concept, and adopts a multilayer distributed architecture, and the overall architecture design mainly comprises: data acquisition, real-time/historical data access, data processing analysis, data statistics display and the like. The intelligent energy management platform and the user side energy management platform, the electric automobile intelligent charging monitoring platform, the demand response/load mutual aid platform, the micro energy network monitoring platform, the user side intelligent operation and maintenance platform and the like are integrated, and interaction is carried out through front-end services established in an isolation area (DMZ).
The data access of the energy management and control subsystem 14 includes acquisition services, and acquires data of a user-side energy management platform, an electric vehicle intelligent charging monitoring platform, a demand response/load mutual aid platform, a micro energy network monitoring platform and a user-side intelligent operation and maintenance platform, and data of data filling or batch import of enterprises which do not realize data acquisition in the platform construction process.
The software of the energy management and control subsystem 14 consists of a station control layer and a spacer layer, and the connection is realized by layering, distribution and open networks. And the equipment of the station control layer fails and stops running, so that the normal running of other layers cannot be influenced.
The communication network design of the energy management and control subsystem 14 may be, for example, based on TCP/IP connections established by an optical fiber network, to form a wide-area real-time communication network, so as to implement real-time communication between each field device and the dispatch center system.
In addition, the existing large motor and lighting system of an enterprise can be further improved.
For example, the motor of large-scale motor equipment (such as a water pump, a fan, an air compressor and the like) can be transformed into variable frequency drive from power frequency drive, and a power frequency bypass is reserved. The motor is started in a frequency conversion starting mode, so that the impact of the motor starting on a power grid can be reduced. And the rotating speed of the motor is adjusted by adjusting the frequency. For the water pump, the function of adjusting the water quantity and the water pressure can be realized by adjusting the rotating speed of the motor; for the fan, the function of adjusting the air quantity and the air pressure can be realized by adjusting the rotating speed of the motor. Thereby improving the service efficiency of large-scale motor equipment and prolonging the service life.
Taking a circulating water pump as an example, the rated power of the water pump is 250kW, the three-phase alternating current 380V is used for power supply, the water pump is directly started at power frequency before being modified in a one-use one-standby mode, and the purpose of regulating the flow and the pressure is achieved by adjusting a regulating valve arranged on a main pipe through signals of a pressure sensor and a flow sensor arranged on the main pipe.
After the water supply system is modified, two circulating water pumps (one for one and one spare) share one 250kW frequency converter, a bypass loop started by power frequency under the fault condition is configured, and the power supply frequency of the frequency converter is adjusted through signals of a pressure sensor and a flow sensor which are arranged on a main pipe, so that the purpose of adjusting the water delivery amount is achieved, the impact of a motor during starting is reduced, and the energy is saved.
The principle of frequency conversion energy saving is briefly explained as follows:
from the principles of fluid mechanics, the relationship between the shaft power P and the flow Q, the head H for a water pump load driven by an induction motor is: p ^ Q × H, when the rotation speed of the motor changes from n1 to n2, the relation between Q, H, P and the rotation speed is as follows:
Q2＝Q1*(n2/n1)；
H2＝(n2/n1)2；
p2＝p1*(n2/n1)3；
it can be seen that the flow Q is directly proportional to the rotational speed n of the motor, while the required shaft power P is directly proportional to the cube of the rotational speed. For example, when 80% of the rated flow is required, by adjusting the rotation speed of the motor to 80% of the rated rotation speed, i.e. adjusting the frequency to 40Hz, the required power will be only 51.2% of the original power.
As shown in fig. 6, when the required flow rate is reduced from Q2 to Q1, if a valve is adjusted, the resistance of the pipe network will increase, the characteristic curve of the pipe network moves upward, the operating point of the system is changed from point a to point B, and the required shaft power P2 is proportional to the area H2 × Q1; if a speed regulation control mode is adopted, the rotating speed of the water pump is reduced from n1 to n2, the characteristics of a pipe network are not changed, but the characteristic curve of the water pump is moved downwards, so that the operating condition point A is moved to the operating condition point C. The required shaft power P3 and the area H at this timeBxQ 1 is proportional. Theoretically, the saved shaft power Delt (P) and (H2-H)B) The area of xQ 1 is proportional.
When the internal illumination system of an enterprise is modified, the light source suitable for modification can be replaced by the LED light source on the premise of meeting the requirements on illumination and the like in relevant standards. For example, metal halide lamps in production areas, energy saving lamps in office areas and living areas, incandescent lamps, etc. are replaced with LEDs, etc. In addition, to the ever-clear region, except changing LED illumination transformation, can also install intelligent control system additional like heating power station, transformer substation, office area corridor, dormitory district corridor etc. including sound sensor and removal sensor etc. when regional nobody illumination self-closing.
The LED lamp is a lamp using an LED as a light source, and the lighting effect is high. The energy-saving lamp has the characteristics of high efficiency and energy saving, the power consumption is 1/10 of a common incandescent lamp and 1/4 of an energy-saving lamp, and the service life is long.
The metal halide lamp has large heat and high required driving voltage, and the LED lamp is relatively environment-friendly, does not contain harmful substances such as mercury and the like, and has shorter reaction time; in addition, the metal halide lamp cannot be turned on again after being turned off (3-5 minutes are required), the power consumption is high, a ballast needs to be arranged (the metal halide lamp is relatively heavy), the service life is shorter than that of an LED, and the like.
In addition, small power supply providing equipment such as a gas generator and a waste heat boiler can be introduced into a contract energy service system based on multi-energy complementation, so that the energy supply of enterprises is increased; furthermore, an air-conditioning energy-saving control system, a combined cooling heating and power supply system, a heating management system, an air supply management system and the like can be introduced to be used as a part of contract energy management, and can also be used as a part of a contract energy service system based on multi-energy complementation.
According to the contract energy service system based on multi-energy complementation provided by the embodiment of the utility model, various energy sources can be integrated into the existing power distribution system of an enterprise, various energy sources are organically integrated, the energy utilization efficiency is improved, and the reliable power supply quality of the enterprise is ensured; in addition, in some embodiments, install energy memory additional, still energy-conserving the transformation of carrying out of great motor of electric load and lighting system reduces possible source consumption, has improved enterprise's electric power system reliability, has reduced enterprise energy cost.
Furthermore, the embodiment of the utility model provides a contract energy service system based on multipotency source is complementary accords with the energy-conserving industry development requirement of country, satisfies local social economic development and protection ecological environment's demand, does benefit to the enterprise with the production and realizes energy saving and emission reduction target, reduces simultaneously and uses the family to use the energy cost, realizes the requirement of comprehensive energy service. The utility model discloses a contract energy management mode is organized and is implemented, synthesizes energy service project construction, has innovated the comprehensive energy service project and has developed the mode, provides new thinking for comprehensive energy management and control service. The utility model discloses fuse technical measures such as distributed photovoltaic power generation technique, distributed wind power generation technique, electrochemistry energy storage technique, electric automobile charging technique, motor frequency conversion technique, green lighting technology, informationization and control technique, realize from purposes such as generated energy, peak regulation benefit, saving electric quantity. The utility model discloses based on energy management and control platform carries out enterprise load management, reduce the biggest energy that needs of enterprise, apply for adjustment basic charges of electricity charging mode, furthest utilizes to expand to install power consumption policy, in good time adjusts the maximum demand declaration volume to reduce enterprise basic charges of electricity expenditure by a wide margin. Realize the automatic supervision and the control to big motor and illumination through energy management and control platform, combine environment and production needs reasonable setting and in time adjustment operating parameter, reasonable control motor and illumination are stopped, and regulation motor speed etc. reduce power consumption to reduce the charges of electricity expenditure. Can also realize functions such as the state maintenance to equipment through energy management and control platform to reduce enterprise's equipment operation maintenance cost, reduce enterprise's expense.
It should be clearly understood that the present invention describes how to form and use particular examples, but the principles of the present invention are not limited to any details of these examples. Rather, these principles can be applied to many other embodiments based on the teachings of the present disclosure.
Exemplary embodiments of the present invention have been particularly shown and described above. It is to be understood that the invention is not limited to the precise arrangements, instrumentalities, or instrumentalities described herein; on the contrary, the invention is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (10)
1. A contract energy service system based on multi-energy complementation is applied to factory and mining enterprises and is characterized by comprising the following components:
the distributed photovoltaic power generation subsystem is built on the roof of an enterprise infrastructure and is used for photovoltaic power generation and providing the generated electric energy to a power distribution station inside the enterprise for the enterprise to use;
the wind power generation subsystem is built in the enterprise and used for generating wind power and providing the generated electric energy to a power distribution station in the enterprise for the enterprise to use;
the energy storage subsystem built in the enterprise realizes alternating current/direct current electric energy conversion and electric energy flow direction control through a bidirectional converter so as to provide alternating current/direct current electric energy when the power is cut off in the enterprise; and
and the energy management and control subsystem is in communication connection with the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem respectively, and is used for acquiring data of the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem and sending control instructions to the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem according to the acquired data so as to perform management and control operation.
2. The system of claim 1, further comprising: the motor of the large-scale motor equipment adopts a variable frequency driving system.
3. The system of claim 1 or 2, further comprising: lighting systems employing LED light sources; the lighting system also includes a sound sensor and a movement sensor to turn off the lighting device when the area is free of people.
4. The system of claim 1, wherein the distributed photovoltaic power generation subsystem comprises: a rooftop photovoltaic power generation unit; the rooftop photovoltaic power generation unit includes: the photovoltaic component comprises a first photovoltaic component, a plurality of first inverters and a transformer, wherein the first photovoltaic component consists of a workshop roof color steel plate and a metal bracket of the enterprise; the first photovoltaic module is electrically connected with the first inverter, the first inverter inverts direct current output by the first photovoltaic module into alternating current, the first inverter serves as a low-voltage side of the transformer, and the output alternating current is connected to a high-voltage bus of a power distribution station inside an enterprise through a cable after being boosted by the transformer.
5. The system of claim 4, wherein the first photovoltaic modules are arranged in a b vertical arrangement, each a b first photovoltaic module forms a string of modules, each c string of modules is electrically connected to one first inverter, and each d first inverters are integrated into a low voltage side of one transformer; wherein a, b, c and d are all positive integers.
6. The system of claim 4, wherein the distributed photovoltaic power generation subsystem further comprises: a carport photovoltaic power generation unit; the bicycle shed photovoltaic power generation unit includes: the second photovoltaic module, the second inverters, the power distribution cabinets, the direct-current chargers and the alternating-current charging piles are formed by steel structures at the tops of the carports of the enterprises; the second photovoltaic module is electrically connected with the second inverter, the second inverter inverts direct current output by the second photovoltaic module into alternating current, the second inverter is electrically connected with a power distribution cabinet arranged on the shed, and the power distribution cabinet provides power for a direct current charger arranged on the shed and the alternating current charging pile.
7. The system of claim 6, wherein the second photovoltaic modules are arranged in an e f vertical arrangement, each e f second photovoltaic module forms a string of modules, each g string of modules is electrically connected to one second inverter, and each h second inverters are collected into one power distribution cabinet; the power distribution cabinet, the direct-current charger and the alternating-current charging pile all adopt a floor mounting mode; and e, f, g and h are positive integers.
8. The system of claim 1, wherein the wind power subsystem comprises: a plurality of wind turbine generators; and the output side of each wind turbine generator is wired in a T-connection mode by adopting a cable, and the generated electric energy is accessed to a low-voltage bus of a power distribution station in the enterprise.
9. The system of claim 1, wherein the energy management subsystem comprises: a server, a workstation and a communication gateway; the server is in communication connection with the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem through the communication gateway, and the workstation is in communication with the server so that a worker can check data, configure parameters and control the distributed photovoltaic power generation subsystem, the wind power generation subsystem and the energy storage subsystem through a user interface provided by the workstation.
10. The system of claim 9, wherein the energy management and control subsystem provides data collection, real-time/historical data access, data processing analysis, and data statistics display functions.
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